Automatically-threading loom-shuttle.



E. S. STIMPSON. AUTOMATICALLY THREADING LOOM SHUTTLE. APPLICATIGNIILEDJULY I. I916.

1, 2% 8@6@ Patented M 1917.

2 SHEETS HEE I.

Witne oo E. S. STIMPSON.

AUTOMAHCALLY THBEADi NG LOOM SHUTTLE.

APPLICATION FILED JULY 1. I916.

Patent-ed May 1, 1917.

2 SHEETQH-SHE'ET 2.

LSQQSGQ.

EDWARD S. STIMPSON, GE HOJPEDALE, MASSACHUSETTS, ASSIGNOR, BY MESNEASSIGN- NTS, TO DRAPER (30R?QRA'JlIClIhT, OF PORTLAND, MAINE, ACORPQRATIQN 0F AUTOMATICALLY-THREADING LOOK-SHUTTLE.

Patented May 11., igfit.

Application filed July 1, 1916. Serial No. 107,1a6.

To all whom itmag concern:

Be it known that I, EDWARD S. S'rlMrsoN, of Hopedale, in the county ofWorcester and State of Massachusetts, have invented a new and ImprovedAutomatically- Threading Loom-Shuttle, of which the following is aspecification.

In automatically threading shuttles such as are employed in the wellknown Northrop loom (exemplified, for example, in United States LettersPatent of Northrop No.

' 529,940, November 27 1894) it is essential wherein- Figure 1, is aplan view of the eye end of a shuttle, parts being broken away tofacilitate illustration. Fig. 2, is a horizontal section in the planeindicated by the line 2-2 in Fig. 3. Fig. 3, is a longitudinal sectionin the plane indicated by the line 3-3 in Fig. 1. Fig. 4, is alongitudinal section in the plane indicated by the line 4-4 in Fig. 1.Fig. 5, is a cross section in the plane indicated by the line 5-5 inFig. 1. Fig. 6, is a perspective view of a block inserted in thethreading passage. Fig. 7, is a cross section in the plane indicated bythe line 7-7 in Fig. 6. Fig. 8, is a side view of the eye of theshuttle. Fig. 9, is a perspective View of the lining of the eye.

The present improvements will be best appreciated by comparison with thethreading ends of the shuttles illustrated in United States LettersPatent of Stimpson, No. 933,497, September 7, 1909, and in United StatesLetters Patent of Smith, No. 1,074,656, October 7 1913.

As shown in the accompanying drawings A, is the body of the shuttlehaving the slotted eye B, at one side and the usual chamber C, whichcontains'the weft carrier.

' Communicating with the weft chamber 0,

many respects to that illustrated in the aforesaid Stimpson Patent No.933,497. The characteristics of this sheet metal threader to be herenoted consist in the spaced side walls a and b; the bottom 0; the hookd,which overhangs the threading passage between the side walls of thethreader at the entrance end, as illustrated in Fig. 5, leaving a narrowthroat for the descent of the thread into the threadin passage; the beake, at the forward end 0 the threader; the horn f, which guides thethread downwardly from the beak to the slotted eye; and the guard g,which overhangs the beak. These characteristics, as thus far specified,are similar to the corresponding characteristics of the said Stimpsonpatent. The sheet metal threader "is maintained in place by a transversebolt 1), as in said Stimpson patent.

Forward of the horn f, is the delivery passage E, which is incommunication with the slotted eye B, as illustrated in Fig. 2. Theshuttle after receiving a fresh supply of weft travels in the directionindicated by the arrow in Fig. 2, and the thread is thus drawn into thethreading passage below the hook d, the beak e, and the guard Then, onthe return flight of the shuttle in the direction indicated by the arrowin Fig. 1, the thread is drawn inwardly through the delivery passage E,beneath the horn f, over the shoulder F, of the shuttle and into theopen mouth of the eye 13. This mode of operation is that common totheshuttle of said Stimpson patent.

In accordance with the present invention. a hard cast metal block G, islocated between the side Walls of the sheet metal threader and restsupon the bottom thereof, said block having a thread retainer H, whichoverhangs the threading passage between the rear hook d, and the beak f,as in said Smith Patent No. 1,074,656. This thread retainer extendsrearwardly toward the rear wall a, of the sheet metal threader leaving anarrow passage for the entrance of the thread. This thread retainer aidsin holding the thread down and preventing it getting out of thethreading passage. This block has a transverse passage h, through whichpasses the same transverse bolt D, which secures the sheet metalthreader in place.

The improvements constituting the pres-f 'ent invention areas follows:

the block thereby leaving a'throat k, for the passage of the thread. Asshown in Fig. 3,

the lower outer edge of the projectionI, constitutes a continuation ofthe horn f, for directing the thread below the hook and into the eye.The inner straight edge of the hook i, constitutes the outer side of theeye as illustrated in Figs. 3 and 4; and the horizontal top of thethroat k, is below the open mouth of the eye. The point of the hook 2',extends below the bottom of the eye as shown in Fig. 3. Accordingly, forthe thread to get out of the eye after it is once threaded necessitatesit getting beneath the point of the hook. By reference to Fig. 2, inwhich the full outer extent of the projection I, is illustrated indotted lines, it will be noted that there is only a small space betweenthe rear face of the projection I, and the vertical rear wall Z, of thedelivery passage E,

thus leaving a narrow gap for the passage of the thread. Accordingly,should the thread get below the point of the hook e', before it, canescape, it has to pass upwardly into the delivery passage E, throughthis narrow gap and also over the shoulder F, of the shuttle.

Even ifthis happens, the thread has still to run the gauntlet of thethread retainer H. the hook d, the beak f, and the guard g, before itcan escape from the threading passage alto ether. The thread is thusreliably held in p ace after it has once been threaded.

The upper face J (see Fig. 6), of the crosswise extending portion of theblock Gr, constitutes the bottom of the thread passage. As shown in Fig.4, this bottom of the threading passage extends upwardly from its innerto its outer end. .The portion m, of this threading passage bottom whichis immediately beneath the thread retainer H, constitutes a floor whichslopes downwardly from frontto rear and the under face of the threadretainer isparallel with this floor m, thus providin a threading passagewhich is upwardly inc ined from the inner to the outer end and from therear to the front both at its top and bottom. The upper face of thethread retainer inclines downwardly from front to rear to direct thethread 'downwardly into the threading passage. As

shown in Fig. 4, the inner lower corner (at the right) of the threadretainer H, is lower than the outer edge (at the left) of the floor17).. Consequently, as the thread is drawn downwardly from the threadingpassage and into the eye of the shuttle (see Fig. 6), the thread dragsthus applying tension to the thread. Also, the thread in passing overthe floor m, of the threading pasagaaeoe T sage to the eye reeves overthe outer edge of aforesaid Smith patent, but said eyes have 4.

commonly been cylindrical in cross section and slit at the top for theentrance of the thread. In accordance with the present in.- vention thesheet metal lining K, has upwardly extending separated legs at, 0,(Figs.

8 and 9), thereby furnishing exclusively,

metallic walls for the contact of the thread after it passes over theshoulder F, of the shuttle body. The inner leg 0, extends beneath theforwardly extending top flange 'p, of the sheet metal-threader so thatthere is no possibility of the thread getting cut.

The outer point of the overhanging guard extends into a recess 8, (Figs.1 and 3), in

the shuttle body and below the bottom of the delivery passage E, so thatthe catching of the thread beneath the overhanging guard is prevented.

I claim-- 1. An automatically threading shuttle having a slotted sidedelivery eye B; and a sheet metal threader, having, spaced side walls a,b, a beak e, extending rearwardly from the front wall I), and outwardlybeyond the eye, a horn f, directing the thread from the beak to the slotof the eye, and a guard g, extending from the rear wall a, forwardlyover the point of the beak; in combination with a metal block G betweenthe side walls of the threader, said block havin a rear wardly extendingthread retainer a floor m, beneath the retainer and spaced therefrom,the lower face of the retainer and the surface of the floor slopingdownwardly toward the rear, and sloping upwardly from the inner to theouter end, thereby forming a threading passage which is upwardlyinclined from the innerto the outer end and from the rear to the frontat both top and bottom, arid a projection I, extending from the frontportion of the block outwardly and over the lower part of the threadeye,

said projection having, a downwardly ex- 7 tending hook e, which isbeyond the outer.

wall 7', of the block and extends below the bottom of the thread eye,whereby said hook serves as an outer wall for said eye, the spacebetween the hook z', and the outer face of the block constituting athroat the top of which is below the plane of the floor m...

eye, and a guard 9, extending from the rear wall a, forwardly over thepoint of the beak; and a delivery passage E, having a vertical wall Z;in combination with a metal block G, between the side walls of thethreader, said block haviilig a rearwardly extending, thread retainerthe outer wall j,

a floor m,-beneath the retainer and spaced therefrom, the lower face ofthe retainer and the surface of the floor sloping downwardly toward therear, and sloping upwardly from the inner to the outer end, therebyforming a thread passage which is upwardly inclined from the inner tothe outer end and from the rear to the front at both top and bottom, anda projection I extending from the front portion of the block outwardlyand over the lower part, of the thread eye, said projection having adownwardly extending hook c, which isbeyond of the block and extendsbelow the bottom of the thread eye, whereby said hook serves as an outerwall for said eye, the forward edge of said hook constituting a downwardcontinuation of the horn and being spaced from said wall Z to form anarrow threadpassage.

3. An automatically threading shuttle having, in combination, a slottedside delivery eye; a threader having spaced side walls; and of thethreader, said block having a rearwardly extending thread retainer, anda floor beneath the retainer and spaced therefrom, the lower face of theretainer, and the surface of the floor sloping downwardly toward therear, and sloping upwardly from the inner'to the outer end, therebyforming a thread passage which is upwardly inclined from the inner tothe outer end and from the rear to the front at both top and bottom.

4. An automatically threading shuttle having, in combination, a slottedside delivery eye; anda threader having a block with a rearwardlyextending thread retainer, and a floor beneath the retainer and spacedtherefrom, the lower face of the retainer and the surface of thefloorsloping downwardly toward the rear, and sloping upwardly from the innerto the outer end, thereby forming a thread passage which is upwardlyinclined from the inner to the outer end and from the rear to the frontat both top and bottom.

5. An automatically threading shuttlea block between the side wallshaving, in combination, a slotted side delivery eye; and a threader witha rear wardly extending thread retainer and a floor beneath the retainerand spaced therefrom, the lower face of the retainer and the surface ofthe floor sloping downwardly toward the rear, and sloping upwardly fromthe inner to the outer end, thereby forming I a thread passage which isupwardly inclined from the inner to the outer end and from the rear tothe front at both top and bottom.

6. An automatically threading shuttle having, in combination, a slottedside delivery eye; a sheet metal threader having a thread passage; and ametal block between the side walls of the threader, the upper face ofthe block constituting the floor of the thread passage, said blockhaving a projection extending from its front outwardly and over thelower part of the thread eye, said projection having a downwardlyextending hook which is beyond the outer wall of the block and extendsbelow the bottom of the thread eye, whereby said hook serves as an outerwall for said eye, and the top of the throat formed by said projectionand hook being below the floor of the thread passage and the slottedentranceto the eye.

7. An automatically threading shuttle having, in combination, a slottedside delivery eye and a threader having a thread passage and a blockwith its upper face constituting the floor of the thread passage andwith a projection extending from its front outwardly and over the lowerpart of the thread eye, said projection having a downwardlyextendinghook which is beyond the outer wall of the block and extends below thebottom of the thread 0 e, whereby said hook serves as an outer wa "forsaid eye, and the top of the throat formedby said projection and hookthe thread passage a he slotted entrance to the eye.

8. An automatically threading shuttle I have hereunto being below thefioor of i

